US Bridges

Ia 93 over Wapsipinicon River

Fair

Bremer County, Iowa · 1.3 Mi. E of Tripoli · Structure no. 000000000015701

Built
1977
48 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
355 ft
4 main spans
Daily traffic
1,140
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 93 over Wapsipinicon River is a prestressed concrete stringer/multi-beam or girder carrying Ia 93 over Wapsipinicon River in Bremer County, Iowa. It was built in 1977, so it is 48 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,140 vehicles a day, roughly 10% of them trucks, projected to reach 1,140 by 2044. The structure is 355 ft (108.2 m) long and 39 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIa 93
CrossesWapsipinicon River
Location1.3 Mi. E of Tripoli
RouteState Highway 93
CountyBremer County
StateIowa
Coordinates42.83568, -92.25743
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.6 US tons
Inventory rating51.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length355 ft (108.2 m)
Longest span96 ft (29.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,140 (2022)
Projected traffic1,140 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 93 over Wapsipinicon River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ia 93 over Wapsipinicon River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Ia 93 over Wapsipinicon River carry?

About 1,140 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Ia 93 over Wapsipinicon River?

The structure is 355 ft (108.2 m) long with a longest span of 96 ft (29.3 m) and a deck 39 ft wide.

Who owns Ia 93 over Wapsipinicon River?

It is owned by the State Highway Agency.